Post-push fix: BUG#20451386 SQL THREAD CRASH: LOG-SLAVE-UPDATES OFF, RELAY LOG ENDS WITH GTID_LOG_EVENT

Fix test utility rpl_receive_event_count.inc to work correctly with
$rpl_after_received_events_action == 'stop'.

Author: Sven Sandberg

mysql-test/include/rpl_receive_event_count.inc

@@ -268,7 +268,8 @@ if ($rpl_after_received_events_action == 'stop')
   --connect (_rrec_other_connection,127.0.0.1,root,,test,$_rrec_port,)
 
   --connection _rrec_other_connection
-  --send STOP SLAVE IO_THREAD $_for_channel
+  --send
+  eval STOP SLAVE IO_THREAD $_for_channel;
   --connection $_rrec_connection
 
   SET DEBUG_SYNC= 'now SIGNAL continue_after_queue_event';